The invention discloses a built-in optical fiber intelligent bolt. The built-in optical fiber intelligent bolt comprises a bolt body, and the top of the bolt body is provided with a nut. The built-in optical fiber intelligent bolt is characterized in that the top of the bolt body is coaxially provided with an installation hole formed in the vertical direction, the installation hole vertically penetrates through the nut, a vertically-hollow annular pipe is embedded in the installation hole, the outer wall of the annular pipe and the inner wall of the installation hole are bonded with glue or clamped with a clamping slot, the outer wall of the annular pipe is uniformly provided with one or more embedding slots, the embedding slots are parallel to the central axis of the annular pipe, and the embedding slots are internally provided with optical fiber sensors through antioxidant glue in a packaged manner. By means of the built-in optical fiber intelligent bolt, the problems that it is difficult to machine a deep and thin hole in the bolt body, glue line curing is difficult, strain transfer is distorted due to an excessively thick glue line, chirp is generated due to uneven glue line curing, and optical fibers are packaged in one way and cannot be effectively monitored are solved.